Restorative Flashcards
(20 cards)
Why do you use amalgam?
- Easy to use
- Good track record
- Good wear property
- No shrinkage
What does silver contribute for amalgams?
Strength
What does tin contribute for amlagams?
Increases setting time
What does mercury do for amalgams?
Activates Reaction
What does copper do in amalgam?
- Ties up tin
- Decreases tarnish and corrosion
- Decreases gamma 2
What kind of amalgam do you use?
- Dispersalloy
- Tytin
Wha type of amlagam is Dispersalloy?
- Admix!
- 2/3 lathe cut
- 1/3 spherical particles
What is nice about Dispersalloy amalgam in records to Gamma 2?
Gamma 2 phase is virtually eliminated
What are some general good characteristics of Dispersalloy?
- Tight contacts
- Good polish
- Slow to harden
- Low early strength
What type of amlagam is Tytin?
Spherical (less mercury needed)
What are some clinical situations you would use Tytin for?
- Condense around pins
- Hardens rapidly
- Smoother polish
- Hard to achieve tight contacts
- Increases overhangs
At what time frame is amalgam 40 - 60% hardened?
1 hour
At what time frame is amalgam 90% hardened?
24 Hours
Do you use Glass Ionomer?
Fuji IX
What type of RMGI do you use?
- Fuji II LC
- 6% resin
- Increases esthetic and physical properties
What type of bonding agents do you use?
- Cleafil SE
- Optibond FL
Why do you use Clearfil SE?
- 2 step mild self etch
- MDP monomer bond to Ca
- Simultaneous Infiltration
- Selective enamel etch improvms marginal staining
- 10 MDP!
Describe the elements of Optibond FL?
- Etchant
- 37.5% phosphoric acid
- Primer
- HEMA, GPDM, PAMM, CQ, ethanol, water
3. Adhesive - Bis-GMA, HEMA, GDMA, EDMAB, silica, CQ
What type of composite do you use?
- Filtek Supreme Composite
- Nanocluster
- zirconia/silica or silica nanomer sized particles
- cluster are silane treated
- Provide cross-link to surrounding resin
- broad filler distribution
- High filler loading
- Increased strength (vs. a microfill)
- Increases polish retention
Why do you use Filtek Supreme Ultra?
- Good wear properties for anterior and posterior
- Good polishability and esthetics
